Cuffing machine



Oct. 20, 1925- J. A. FLEISCHLI CUFFING' MACHINE Filed Aug- 1'7 1922 2 Sheets-Sheet 1 av /1w Oct. 20, 1925 J. A. FLEISCHLI CUFFING- MACHINE Filed Aug 1'7, 1922 2 Sheets-Sheet 2 INV ENTOR:

Afro Nev.

Patented Get. 2%), 1925.

UNITED srarss 1,557,680 pATQE NT.

JOHN FLEISCHLI, OF ST. LOUIS, 'MIS SOURI, ASSIGNTQR' T0. GUPPLES-COM-BANY MANU- FAGTUREBS, OF. ST. LOUIS, MISSOURI, A CORPORATION MISSOURI.

GUEFING MACHINE,

Application filed August, 17, 1922. Serial No. 5-82,?13.

To all whom it may concern:

Be it, known that 1, JOHN A. F LEISOHLI, a citizen of the United States, residing at the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Cufiing Machines, of which the following is a specification,

This invention is a cufling machine, especially designed and intended for. preparinv for splicing the ends of inner tubes for vehicle tires; The Objectof this invention is to perform mechanically operations that -have been heretofore and are yet commonly preformed by hand and to provide mechanism 'for' that purpose that will be simple and cheap to construct and convenient and eflicient in operation.- In the accompanying drawings forming part of this specification, in which like numbers of reference denote like parts wherever they occur,

Figure 1 chine;

is a side elevation fthe ma- Figure 2 is a top plan View of the spreader;

Figure 3 is. a detail on'an enlarged scale of a device for actuating the arms of the spreader;

Figure 4 depicts one cufling operation;

Figure 5 depicts the preparation for the cutting operation on the other end of the tube and in dotted lines the ultimate form of cuff on that end of the tube;

Figure 6 is a front end elevation of the machine; and 6 Figure 7 is a perspective view of a metal device upon which the cuff is turned.

The main frame 1 of the machine is supported by legs 2 and supports standard 3, bearing cylinder or blocK t, through which recipro cates rod 5. A plurality of fingers 6 are pivoted at 7 to cylinder 4 and normally rest upon flange 8, borne by cylinder 4. Springs 9 normally tend to draw the tips 10 of fingers 6 together, so as to group them in a relatively small space. The shape of fingers 6 is such that the transverse area thereof at thetips 10 is materially less than at flange 8.

A fork 11 at the forward end of rod 5 is provided with branches 12, each of which branches bears a roller 13. Each of the said rollers 13 is assigned to one of the fingers 6 and is adapted to ride upon its curved or slanting surface 1 1.- When rod 5 is pushed forward,

rollers 13, riding on the cam surface lf, expa d t e fi ger t ps g adua y t fflthe max-imumekpansionq Movement in the op;

posite direction of rod 5' results in rollers 13 riding down the said cam su-rface l f, so that finger tips 10 can close together in the mannershown'in Figure fund'er the impulsion of springs9. The above-mentioned reciprocation of rod 5 "is caused by rod 15, pivoted at 16 to link 17, which is pivoted at 18 to block19,which isslidablymounted on rod 5'and fastened thereto set-screw 20. Stop 21 is slidably" mounted on rod-5 and can "be fixed thereto by set-screw 22 Stop 21 is therefore adjustable.- Thethrust of' rod 5 is likewise adjustable due to the slidability onirod 5'of'block 19: i

Rod 15 is so connectedjwith'treadle' 23,

as to rock therewithion pivot 24, j ourna'led,

in standard 25;

The frame composedof standard 26'and cross-piece 27 is for the purpose of'steadyi'ng the movements of rod 5 and fingers 6; which movingparts pass through apertures the members 26 and are guided'thereby.

Link 17 is in the form 'of' a fork. Its form is best seel 'inFigure' 2, Each of its branches is fastened oii opposite sides of block 19. At its loop it laps around the upper end of rod 15. A bolt 28 passes through both branches of fork or link 17,'i'ts head being on one side and nut 29. upon the other. In operation, with the finger tips 10 in their normally closed relation, as shown in Figure 1, the open end of an inner tube for an automobile tire or the like can easily be spread over them, as their diameter is less than the diameter of the tube. By the diameter of the fingers is meant the diameter of a circle that will inclose the plurality of finger tips 10. There may be two,

three, four, or more such fingers. In the drawings a group of four such fingers is 7 over, before the insertion of finger tips 10 in the end or mouth of tube 30. Pressure with the foot on treadle 23 rocks arm or rod 15 forward, thus actuating rod 5, whereby rollers 13 are caused to move forward on Q cam surfaces 14:, and thus the spreading of finger tips 10 is accomplished, with the result that the mouth or end of tube is expanded as shown in Figure 5, which permits the facile doubling of the material of the end of tube 30 back upon itself in the manshown in Figures 4: and 5 would be difiicult,-

if not impossible, without the use of sleeve 31, which is preferably of metal, but may be of any substantial or hard material.

These operations have been performed by hand, but are tedious and difficult when manually performed, which difficulty is enhanced by the partially plastic condition of 'the rubber of which the tube 30 is composed, which gives it a tendency to adhere whenever one part of the tube comes in contact with another part thereof. The use of finger tips 10 obviates such difliculties and renders the operation of cufiing simple,

convenient, and rapid.

Spring 32 keeps treadle 23 normally up. Having thus described this invention, I hereby reserve the benefit of all changes in form, arrangement, order, or use of parts, as it is evident that many minor changes may be made therein without departing from the spirit of this invention or the scope of the following claims.

1 claim:

1. A cuffing machine including a standard, a cylinder on the standard, aplurality of fingers pivoted on the cylinder to swing away from and towards the axis of said cylinder, said fingers being curved inwardly at the extremities, bluntly pointed conical ends on said fingers, and spring means holding the fingers normally closed toward said axis, a rod extending through the cylinder axially thereof, a disk on the end of the rod having its edges in contact with said fingers on their inner sides and movable forwardly to expand the set of fingers, and

means to move the rod. V

2. A cuffing machine including a standard, a cylinder on the Standard, a plurality of fingers pivoted on the cylinder to swing away from and towards the axis of said cylinder, sai'd fingers being curved inwardly at the extremities, bluntly pointed conical ends on said fingers, and sprin means holding the fingers normally closed toward said axis, a rod extending through the cylinder axially thereof, a disk on the end of the rod having its edges in contact with said fingers on their inner sides and movable forwardly to expand the set of fingers, means to move'the rod, and a head closing one end of the cylinder and pro- 70 vided with an opening through which said rod passes.

In testimony whereof I hereunto aflix my T V signature.

JOHN A. FLEISGI-ILI. 

